DBZ games are known for their protection. They usually don't work on emulators and flash carts. So we gotta wait until someone makes a patch to make this playable. I remember back when Legacy of Goku 2 came out for GBA....same thing happened. It wouldn't work on any emulator until it was patched.

For this game, I don't think it's a matter of the firmware for the various flash carts to be updated, but rather a patch for the game itself.